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En matemáticas, una variedad casi compleja es una variedad diferenciable M equipada en cada espacio tangente con una estructura compleja que varía de forma diferenciable de punto a punto. Esta estruct ...
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In geometry, the Killing–Hopf theorem states that complete connected Riemannian manifolds of constant curvature are isometric to a quotient of a sphere, Euclidean space, or hyperbolic space by a group ...
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A hopfion is a topological soliton. It is a stable three-dimensional localised configuration of a three-component field with a knotted topological structure. They are the three-dimensional counterpart ...
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In Riemannian geometry, the sphere theorem, also known as the quarter-pinched sphere theorem, strongly restricts the topology of manifolds admitting metrics with a particular curvature bound. The prec ...
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The grid cell topology is studied in digital topology as part of the theoretical basis for (low-level) algorithms in computer image analysis or computer graphics. The elements of the n-dimensional gri ...
In the mathematical subject of group theory, the Stallings theorem about ends of groups states that a finitely generated group G has more than one end if and only if the group G admits a nontrivial de ...
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In complex geometry, a Hopf surface is a compact complex surface obtained as a quotient of the complex vector space (with zero deleted) by a free action of a discrete group. If this group is the integ ...
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O sucesso da competição televisiva britânica Pop Idol para eleger novos talentos musicais, desembocou em spin-offs em mais de 40 países. Agora referida como formato Idols pela FremantleMedia , o Pop d ...
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In complex geometry, a Hopf manifold is obtainedas a quotient of the complex vector space(with zero deleted) by a free action of the group ofintegers, with the generator of acting by holomorphic contr ...
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In mathematics (more specifically, in homological algebra), group cohomology is a set of mathematical tools used to study groups using cohomology theory, a technique from algebraic topology. Analogous ...
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